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- W2034876222 abstract "In this work we investigate the different states of a system of spin-1 bosons in two potential wells connected by tunneling, with spin-dependent interaction. The model utilizes the well-known Bose-Hubbard Hamiltonian, adding a local interaction term that depends on the modulus of the total spin in a well, favoring a high- or low-spin state for different signs of the coupling constant. We employ the concept of fidelity to detect critical values of parameters for which the ground state undergoes significant changes. The nature of the states is investigated through evaluation of average occupation numbers in the wells and of spin correlations. A more detailed analysis is done for a two-particle system, but a discussion of the three-particle case and some results for larger numbers are also presented." @default.
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- W2034876222 date "2015-03-06" @default.
- W2034876222 modified "2023-09-24" @default.
- W2034876222 title "Ground states of spin-1 bosons in asymmetric double wells" @default.
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- W2034876222 doi "https://doi.org/10.1103/physreva.91.033608" @default.
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